Internal-combustion engine.



L. F. GOODSPEED.

INTERNAL COMBUSTION ENGINE. APPLICATION FILED MAR. 11, 1910.

Patented June 29, 1915.

WITN asses v a? i FFKE INTERNAL-COMBUSTION ENGINE.

intense.

( Specification of Letters Patent.

Patented June 29, 1915.

Application filed March 11, 1-910. .Serial No. e8fi79.

To all whom it may concern Be it known that I, LELAND F. Goonsrnno,

a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Internal-Combustion Engines, of which the following is a specification.

This invention relates to internal combus in locating the inlet and exhaust valves in the top head of the engine-cylinder and in the provision of means for preventing the valves from dropping into the cylinder in case of breakage.

Still another object of the invention is to provide a valve head in which the metal is uniformly distributed, so as to secure even heatingand cooling effects and thereby prevent warping.

Other objects and advantages will be made apparent in-the following more detailed description of the invention.

In the accompanying drawing; Figure 1 is a side elevation of a four cylinder, four cycle, internal combustion engine with my invention applied thereto; Fig. 2 a top plan view thereof; Fig. 3 a top plan view of one engine cylinder; and Fig. 4 a section taken substantially on the line aa of Fig. 3.

According to my improvement, one or more engine cvlinders 1 may be provided, Figs. 1 and 2 showing four such cylinders j connected together.

Considering one engine cylinder, as

, shown in Figs. 3 and 4,.a top head 2 is provided which is adapted to be secured to the cylinder 1 in any suitable manner. In this head are contained poppet valve seats 3 and 4 for the inlet valve 5 and the exhaust valve 6 respectively. Below-the valve seats 3 and 4 the head is machined to substantially the bore of the cylinder proper, except that adjacent to the valves 5 and 6 the walls of the heads are counterbored as shown at 7, so as to provide a projecting ledge 8 at the upper @dg Of the cylinderwall.

shelf is for the purpose of preventing the valves from falling into the cylinder in case of breakage of a valve stem.

The valves and 6 are provided with valve stems 9 and 10 respectively, the valve 5 being normally held closed through the valve stem 9 by coil spring 11 and the valve 6 through its stem 10 by the spring 12. Operating levers 13 and 14 are provided for actuating the valves 5 and 6 respectively, said levers being connected to the usual operating mechanism, as will be understood. The valve stems 9 and 10 are preferably grooved at an intermediate point 15, so as to provide a weak point in the stem at which breakage will occur, if circumstances arise to cause a break.

' A large direct inlet passage 16 leads to the inletvalve 5 and a similar exhaust passage 17 to the exhaust valve 6, the passages 16 being connected to the intake pipes 18 and the passages 17 to an exhaust manifold 19. r

A water jacket space 20 may be provided around the cylinder and the same may be continued up into the head in the form of a space 21.

It will now be seen that there are no cored passages forming parts of the combustion chamber, and as the combustion chamber is all machined, uniformity of volume is secured with the resultant advantages. The construction of the head permits the walls to be made of uniform thickness so that heating and cooling effects are evenly distributed and thereby warping is prevented.

By doing away with cored passages, the liability of carbon or the products of combustion sticking and clogging up the passages is avoided;

It will also be noted that the construction is simple and compact and such as to facilitate access in case of repairs.

Having now described my v invention, What I claim as new and desire to secure by Letters Patent, is

1. In an internal combustion engine, the combination with an engine cylinder, of a separate head for said cylinder having a chamber forming an extension of the cylinder chamber, inlet and exhaust valves mounted in said head and extending radially beyond the bore of the engine cylinder, recesses being formed in the head to provide ledges on the top edge of the cylinder This ledge or for sufpporting said valves to revent same from alling into the engine cy nder in case of breakage, and valve stems having localized weak points.

2. In an internal I combination with an engine cylinder, of a head for said cylinder, inlet and exhaust valves mounted in said head, means for preventing the valves from falling into the engine cylinder in case of breakage, valve .stemsforoperating said valves, said stems combustion engine, the

having localized points of posit wholly dropp in case of breakage.

In testimony whereof I set my hand.

Witnesses:

' W. K. Bonn,

v F. P. 0001:.

weakness "in a 1on to prevent the-valve, stems from g out of the stem bearings have herennto LELAND F. eoonsPEnn. 

